package basicType;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Created by chenxin34 on 2019/8/21 上午8:12.
 */
public class CountTest {
    public static void main(String[] args) {
        Map<Long, Integer> map = new HashMap<>();
        Integer a = 0;
        map.put(1L, a);
        a = a + 1;
        System.out.println(map.get(1L));
    }
}
